[Given Planck's constant \[h=6.6\times {{10}^{34}}Js,\] speed of light \[c=3.0\times {{10}^{8}}m/s\]] |
A) \[2\times {{10}^{16}}\]
B) \[1.5\times {{10}^{16}}\]
C) \[5\times {{10}^{15}}\]
D) \[1\times {{10}^{16}}\]
Correct Answer: C
Solution :
\[P=\frac{n.hc}{\lambda }\] \[n=\frac{P\lambda }{h.c}\] \[=\frac{2\times {{10}^{-3}}\times 500\times {{10}^{-9}}}{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}\]\[=1.5\times {{10}^{16}}\]You need to login to perform this action.
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